Hollow-shaft rotary table with timing-belt drive and the Ezi-SERVO II EtherCAT 4X multi-axis drive: precise positioning, cables, hoses or optics routed straight through the axis of rotation, and integrated into the machine control via EtherCAT – for indexing tables and rotary axes with varying load inertia.
Mechanics
The low-backlash involute timing belt achieves a repeatability of ±30 arcsec (≈ 0.008°) and runs quietly. A ball-bearing output table and carbon-steel timing pulleys make the unit rigid and wear-resistant. The drive pulley has its own bearings, so the motor shaft carries no belt forces – extending service life. Frame sizes 60, 85 and 130 mm with hollow shaft Ø27, Ø37 and Ø55 mm, reduction ratio 1:5 and up to 12.8 N·m permissible torque. A home sensor set (NPN or PNP) is available as an option.
Control
The Ezi-SERVO operates in closed loop: no lost steps, no hunting at standstill, no gain tuning required. A single EtherCAT drive controls up to four axes – with several rotary tables this saves drives, cabling and control cabinet space. Integration uses the standard CiA 402 profile; control and main power supplies are separate.
